package com.cosina.test;

import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;

import android.opengl.GLU;
import android.opengl.GLSurfaceView.Renderer;

public abstract class BaseRender implements Renderer {

	public final void baseDrawFrame(GL10 gl){
		gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
		gl.glMatrixMode(GL10.GL_MODELVIEW);
		gl.glLoadIdentity();
	}
	
	@Override
	public void onSurfaceChanged(GL10 gl, int width, int height) {
		gl.glViewport(0, 0, width, height);

		float ratio = (float) width / height;
		gl.glMatrixMode(GL10.GL_PROJECTION);
		gl.glLoadIdentity();
//		gl.glFrustumf(-ratio, ratio, -1, 1, 1, 10);
		GLU.gluPerspective(gl,45.0f, ratio, 0.1f, 200.0f);
		gl.glMatrixMode(GL10.GL_MODELVIEW);
		gl.glLoadIdentity();
	}

	@Override
	public void onSurfaceCreated(GL10 gl, EGLConfig config) {
		gl.glDisable(GL10.GL_DITHER);

		gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_FASTEST);

		gl.glClearColor(0, 0, 0, 0);
		
		gl.glEnable(GL10.GL_CULL_FACE);
		gl.glShadeModel(GL10.GL_SMOOTH);
		gl.glEnable(GL10.GL_DEPTH_TEST);
	}
}
